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Big Tree checkerbloom, marsh checker mallow, marsh checkerbloom

glaucous checker mallow, waxy checker mallow, waxy checkerbloom

Habit Herbs, perennial, 0.2–0.5 m, not glaucous or stems sometimes glaucous, with taproot from branched crown, usually wide-spreading and clonal from elongated, horizontal, freely-rooting rhizomes or elongated horizontal stem bases, 2–5 mm diam. Herbs, perennial, 0.2–0.5(–0.7) m, glaucous, with taproot and caudex, without rhizomes.
Stems

usually scattered, ascending to erect, solid, sometimes glaucous, proximally usually long bristly-hirsute, hairs simple or few stellate, rarely glabrous, distally stellate-hairy.

usually few to many, clustered, sprawling or decumbent to ascending, rarely erect, not rooting, solid, glaucous, proximally usually stellate-puberulent, sometimes glabrous, distally glabrous.

Leaves

mostly cauline (on reproductive stems), basal present mostly when stems young;

stipules lanceolate to ovate, (3–)4–5 × 0.8–3 mm;

proximal petioles 7–12 cm, 3–4 times blade length, distal usually 1/2–1 times blade length;

blade often grayish green, reniform or reniform-orbiculate, 2.5–6 × 2.5–6 cm, base wide-cordate, margins ciliate, apex rounded overall (lobes can be acute), surfaces softly stellate-hairy to silky villous-hirsute;

basal shallowly, palmately 5-lobed, lobe not 1-sided, 3–8 cm, elongating in fruit;

bracts linear, unlobed or infrequently 2-fid, 2–5 mm, subequal to or longer than pedicels, much shorter than calyx.

basal and cauline, basal leaves 9 or fewer or deciduous;

stipules lanceolate, (2–)3–5(–6) × 0.5–1.5 mm;

petioles of basal and proximal cauline leaves 6–14 cm, 3–4 times as long as blades, reduced distally to 1/2 times to as long as blades;

blade reniform-orbiculate, palmately 5(–7)-lobed, deeply incised, 2–6(–8) × 2–6(–8) cm, glaucous, surfaces glabrous or minutely stellate-puberulent, lobes shallowly dentate, more deeply divided on distal leaves, margins entire, distalmost sometimes linear, unlobed.

Inflorescences

ascending, open, calyces not conspicuously overlapping except sometimes in bud, usually unbranched, 3–10(–20)-flowered, elongate, 1-sided, 8–20 cm, axis curved between flowers, sometimes zigzag in appearance;

bracts linear to lanceolate, distinct or connate and 2-fid, 5 mm, proximal divided to base, distal often undivided, shorter than to equaling pedicels.

Pedicels

1–3(–5) mm;

involucellar bractlets absent.

2–3(–10) mm;

involucellar bractlets absent.

Flowers

bisexual or unisexual and pistillate, plants gynodioecious;

calyx 5–9 mm, stellate-puberulent and softly long-hirsute with marginal bristles 1.5 mm;

petals magenta-pink, drying dark purple, sometimes pale-veined, 5–15 mm, pistillate darker, 5 mm;

staminal column 3–6 mm, hairy;

anthers white;

stigmas 6–8.

bisexual or unisexual and pistillate, plants gynodioecious;

calyx 5–10 mm, enlarging in fruit, hairy, hairs scattered, minute, stellate and sometimes capitate, glandular;

petals pink to pink-purple, pale-veined at least when dry, pistillate (7–)9–12 mm, bisexual 15–20(–25) mm;

staminal column 4–7 mm, stellate-hairy;

anthers pale yellow or pinkish to white;

stigmas 6–8.

Seeds

1.5–2 mm.

2 mm.

Schizocarps

4–5 mm diam.;

mericarps 6–8, 2.5 mm, glabrous or sparsely stellate-puberulent, sides slightly reticulate-veined, back rougher, pitted, mucro 0.5 mm.

5–7 mm diam.;

mericarps 6–8, 3–3.5 mm, roughened, sides reticulate-veined and deeply pitted, back reticulate-veined and glandular-puberulent, mucro 0.3–1 mm.

2n

= 20.

= 40.

Sidalcea ranunculacea

Sidalcea glaucescens

Phenology Flowering Jun–Aug. Flowering (May–)Jun–Aug(–Sep).
Habitat Moist meadows, stream banks Dry, grassy meadows, open, usually red fir, juniper, or ponderosa pine forests, often serpentine
Elevation 1800–2800(–3100) m (5900–9200(–10200) ft) (900–)1500–3000 m ((3000–)4900–9800 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

Sidalcea ranunculacea is uncommon and generally found in the vicinity of Sequoiadendron, hence the common name, in the Greenhorn Mountains of Kern and Tulare counties. The interrupted inflorescences, with as much as 5–15 cm of exposed rachis between flower clusters in well-developed individuals, are distinctive, as are the slender rhizomes and relatively small flowers. In some respects it resembles S. reptans, which is more widely ranging in similar habitats and also has long bristles at the base of its stems and slender rhizomes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Sidalcea glaucescens is a relatively common, generally low-growing plant of relatively high elevations; it occurs from the central and northern Sierra Nevada to the southern Cascade and Klamath ranges and to north of Reno, Nevada. It usually can be distinguished by its highly glaucous, waxy stems and leaves, 3–5-lobed, entire-margined leaves, and basal leaves that wither by the time fruit is mature; additionally, proximal flowers are spaced several centimeters apart and leafy-bracted, and the inflorescence axis is curved between flowers. It has been confused with S. asprella, S. elegans, and S. multifida, to which it appears to be closely related. It can generally be distinguished from S. multifida by its 5(–7)-lobed leaves, the lobes shallowly incised or entire, its nonpersisting, fewer basal leaves, and its more-procumbent habit. Sidalcea elegans and S. virgata in southwestern Oregon also have been confused with S. glaucescens.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 6, p. 352. FNA vol. 6, p. 333.
Parent taxa Malvaceae > subfam. Malvoideae > Sidalcea Malvaceae > subfam. Malvoideae > Sidalcea
Sibling taxa
S. asprella, S. calycosa, S. campestris, S. candida, S. celata, S. covillei, S. cusickii, S. diploscypha, S. elegans, S. gigantea, S. glaucescens, S. hartwegii, S. hendersonii, S. hickmanii, S. hirsuta, S. hirtipes, S. keckii, S. malachroides, S. malviflora, S. multifida, S. nelsoniana, S. neomexicana, S. oregana, S. pedata, S. reptans, S. robusta, S. setosa, S. sparsifolia, S. stipularis, S. virgata
S. asprella, S. calycosa, S. campestris, S. candida, S. celata, S. covillei, S. cusickii, S. diploscypha, S. elegans, S. gigantea, S. hartwegii, S. hendersonii, S. hickmanii, S. hirsuta, S. hirtipes, S. keckii, S. malachroides, S. malviflora, S. multifida, S. nelsoniana, S. neomexicana, S. oregana, S. pedata, S. ranunculacea, S. reptans, S. robusta, S. setosa, S. sparsifolia, S. stipularis, S. virgata
Synonyms S. interrupta, S. reptans var. ranunculacea, S. spicata var. ranunculacea S. montana
Name authority Greene: Leafl. Bot. Observ. Crit. 1: 75. (1904) Greene: Bull. Calif. Acad. Sci. 1: 77. (1885)
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